Punch.



G. R. PHILP.

PUNCH.

APPLICATION FILED MAY23, 1913.

1,097,669. Patent d May 26, 1914.

Inventor Attorneys tlNfTED STATES PATENT OFFICE.

GEORGE R. PHILP, OF LAKE CITY, MICHIGAN.

PUNCH.

roaacco.

Application filed May 23,1913.

To all whom it may concern Be it known that l, Gnoncn R. Pninr, acitizen of the United States, residing at Lake City, in the county oflllissaukee and tate of Michigan, have invented a new and useful Punch,of which the following is a specification.

The present invention appertains to a novel and improved punch for sheetmetal or other stock.

It is the object of the present invention to provide a punch which isoperable either by the hand or foot of the operator.

Another object of the present invention is to provide a device of thenature indicated which shall be improved gene "ally in its con structionand operation, the device being comparatively simple, durable,substantial, compact and inexpensive in construction, as well asserviceable, convenient and efficient in its use.

lVith the foregoing and other objects in view, which will be apparent asthe description proceeds, the present invention resides in thecombination and arrangement of parts and in the details of constructionhereinafter described and claimed, it being understood that changes inthe precise embodiment of the invention herein disclosed can be madewithin the scope of what is claimed without departing from the spirit ofthe invention.

The invention has been illustrated in its preferred embodiment in theaccompanying drawing, wherein Figure 1 is a side elevation of theimproved device. Figs. 2, 3, l, and 6 are sectional views on the lines22, 3-3, il-, 5-5, and 6-6, respectively, of Fig. 1. Fig. 7 is a planview of the beam lifting spring. Fig. 8 is an enlarged elevation of themale die. Fig. 9 is a fragmental detail of the stock holding member.

In carrying out the invention, reference being had in detail to thedrawing, there is provided a base 11 comprising a bar of suit able metalset on edge and having its forward end bent or formed into an eye 12.lhe base 11 as well as the other parts hereinafter described, may be ofany suitable dimensions or proportions, according to the circumstances.A beam 13 fashioned from a bar of suitable metal is disposed above thebase 11, and has its forward end bent or formed into an eye 1%complementing the.

Specification of Letters Patent.

Patented May 26, 1914.

Serial No. 769,543.

eye of the base, while the rear end of the beam 13 is bent or deflecteddownwardly and bifurcated or forked as at 16, to straddle the base 11adjoining its rear end. A fulcrum pin 17 has its ends or terminalsloosely ournaled within the branches of the fork 16, and has itsintermediate portion seated within a notch 18 provided in the upper edgeof the base 11. A. pair of uprights or standards 19 are riveted at theirends to the sides of the base 11 adjoining the forward end or eye 12 ofthe base, while a similar pair of uprights or standards 20 are rivetedto the sides of the base at its rear end, the said uprights or standardsbeing fashioned from suitable bars of metal, and having their lower endsbent angularly or outwardly into feet 21 adapted to be attached to abench or table top, or other surface for maintaining the device inposition. The forward uprights 19 are relatively long, while the rearuprights 20 are relatively short, the beam 13 working snugly between theup rights 19 so as to be guided for vertical movements by thesaiduprights 19.

An operating lever 22 is provided with an eccentric or cam 23 at oneend, the said eccentric or cam being fulcrumed between the upper ends ofthe uprights 19 by means of a bolt 9.411'and being designed to engagethe upper edge of the beam 13. The eccentric or cam 23 is so designedthat it may engage the beam 13 either in rear or-in advance of theuprights 19, whereby the lever may project either rearwardly orforwardly to be operated by the foot or hand, of the operator, whicheveris desired. As seen in Fig. 1, the lever is shown in full linesprojecting rearwardly, for the attachment of a connecting rod to permitthe lever to be depressed by a foot treadle, or the like. In the saidfigure, the lever is shown as thrown forwardly, in dot and dash lines,to be oper ated by the hand of the operator, as will be apparent. Ineither event, the depression of the free end of the lever will serve toforcibly depress the beam 13 for bringing the dies together, as willhereinafter apear.

A clutch 26, which is in the form of an elbow or angular member, has onearm or one end fulcrumed between the upper ends of the uprights 20 bymeans of a pin 27, in order that the lower edge of the other or free armwill cooperate with the upper edge 1 of the base 11 within the fork 16of the beam. The lower edge of the free arm of the clutch 26 is providedwith a notch 28 engaging over the pin 17, while the other or pivoted armof the clutch is provided with a rearwardly projecting tail or finger 29protruding from between the uprights and having a washer 30 and a nut 31engaged thereon. The washer 30 contacts with the rear edges of theuprights 20, while the nut 31 is threaded upon the tail 29 to draw theclutch 26 rearwardly to thereby force the free arm of the clutchdownwardly and to firmly grip the fulcrum pin 1'7 in position, so thatthe fulcrum pin will be constrained against rotating. In this manner,the branches of the fork 16 are mounted to swing upon the ends of thefulcrum pin 17, and if the clutch 26 is loosened, the fulcrum pin 17 maybe withdrawn and replaced whenever desired.

In order to normally press the beam 13 upwardly, the leaf spring 32 issecured to the base 11 and engages the beam 1", as will be presentlydescribed. The leaf spring 32 is preferably tapered from its butt end orheel to its tip or free end, as seen in Fig. 7, and is provided at itsbutt end or heel with an extension 33 projecting within the fork 16 ofthe beam and below the free end or arm of the clutch 26. A pin 34 isdisposed between the extension 33 of the spring and the free arm of theclutch 26, the said extension of the spring and arm of the clutch beingnotched so as to receive the pin 34 to prevent the spring from shiftinglongitudinally when the clutch is tightened. The free end of the leafspring 32 engages the lower edge of the beam 13 in order that the upwardtension of the spring will raise the beam when free. The female die 35is secured within the eye 12 of the base, the upper portion of the eye12 being preferably cut away and the eye 35 being preferably providedwith the flange 36 fitting within the cut away port-ion flush with theupper edge of the base 11. The male die or bit 37 is provided with aninverted, conical enlargement 38 providing a shoulder bearing againstthe lower end of the eye 14, said die having an upstanding shank 39projecting from the enlargement 3S and fitting within the eye 14. Setscrews 40 are engaged through the eyes 12 and 14 to bind the female die35 and shank 39 of the male die within the respective eyes or sockets.The active end or face of the male die 37 is of novel formation, thesame being beveled or inclined from one side to a point short of theother side, as at 41, to provide a sharp projecting piercing point 42 atthe first mentioned side and an inset severing shoulder 43 at theopposite side. The point 42 is adapted to readily pierce the sheet metalor other stock while the shoulder 43 completes the operation and seversthe disk or piece punched from the stock.

The stock holding member embodies a block 44 mounted on the upper edgeof the base 11 between the uprights 19, a pin 45 being passed throughthe uprights 19 and engaging within a notch 46 provided in the upperedge of the block 44 to maintain the said block in position. The block44 is providcd with a forwardly projecting arm 47 spaced slightly abovethe base 11 and provided at its forward or free end with a fork 48 abovethe female die and through which the male die is projectable. The sheetmetal or other stock is adapted to be received between the arm 47 andthe upper edge of the base 11, so as to stand over the female die.

From the foregoing, taken in connection with the drawing, it will beevident that the several parts may be inexpensively manufactured andreadily assembled, the several parts being readily taken apart forpurpose of repair or displacement, whenever desired.

In use, the sheet metal or other stock to be punched is introduced overthe female die below the fork 48 of the arm 47, and by depressing thefree end of the lever 22, the beam 13 may be depressed in order that themale die carried by the free end of the beam 13 may be brought intocofiperation with the female die. The male die in being depressed mayreadily punch a hole in the stock, due to the particular construction ofthe male die, the disk or piece severed passing through the female die35, which is hollow or tubular for this purpose. After the operationabove described, the lever 22 is released, which will permit the spring32 to come into play for raising the beam 13 and consequently retractingthe male die from the female die. The arm 47 will pre vent the stockfrom being raised with the male die, and will serve to hold the stock inposition on the female die, in order that the stock may be slid to a newposition for a second operation, if so desired.

Having thus described the invention, what is claimed as new is 1. In adevice of the character described, a base, a beam, cooperating diescarried by the said members, a fulcrum pin journaled to the beam, thefulcrum pin resting on the base, a clutch engageable over the fulcrumpin, and means for clamping the clutch upon the fulcrum pin.

2. In a device of the character described, a base, a beam having a forkat one end, the base and beam having cooperating dies, a fulcrum pinjournaled to the branches of the fork and resting upon the base at itsintermediate portion, a clutch projecting within the fork and engagingover the fulcrum pin, means for clamping the clutch over the fulcrumpin, and a leaf spring having its butt end clamped between the clutchand base, the free end of the leaf spring contacting with the beam tolift the same.

3. In a device of the character described, a base, a beam having a fork,the base and beam having cooperating dies, a fulcrum pin having its endsjournaled through the branches of the fork, the intermediate portion ofthe fulcrum pin resting on the base, an upright secured to the base, aclutch pivoted to the upright and projecting Within the fork, and meansfor operably connecting the clutch and upright for clamping the clutchover the fulcrunrpin.

at. In a device of the character described, a base, a beam having afork, the base and beam having cooperating dies, a fulcrum pin havingits ends journaled through the branches of the fork, the intermediateportion of the pin resting on the base, uprights secured to the sides ofthe base, a clutch pivoted between the uprights and projecting withinthe fork to engage the fulcrum pin, the clutch having a projectionprotruding from between the uprights, and a member threaded on theprojection and engaging the uprights to clamp the clutch member over thefulcrum pin.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

GEORGE It. PHILP.

Witnesses EVERETT REEDER, Eva LA DOUGEUR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, .D. G.

